2
mentally deficient
2
mentally strange(expression, silly, foolish, mad, insane)
2
moon-struck
2
morbid
2
mysterious(unusual, strange, unexpected)
2
nonsensical(silly, foolish, crazy, mad, unreasonable)
2
not right(expression, idiom, insanity)
2
off one's chump
2
round the bend(expression, idiom, silly, foolish, mad)
2
screw loose(expression, silly, foolish, mad, insane)
2
shady(unusual, strange, unexpected)
2
simple-minded
2
tetched
2
uncanny(unusual, strange, unexpected)
2
unnatural(unusual, strange, unexpected)
2
upset(mad, insane, angry, preoccupied, livid)
1
aberrant(foolish, hot, unreasonable, illogical, preoccupied)
1
abject
1
absurd(adjective, wrong, wild, strange, silly)
1
acting crazy(expression, adjective, silly, foolish, crazy)
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APASmart Define. (2015). demented thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/demented/thesaurus/synonyms
ChicagoSmart Define. 2015. "demented thesaurus" https://smartdefine.org/demented/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, demented thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/demented/thesaurus/synonyms>.
MLASmart Define. "demented thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/demented/thesaurus/synonyms>